package com.bdqn.ch06.shiro;

import com.bdqn.ch06.entity.Right;
import com.bdqn.ch06.entity.Role;
import com.bdqn.ch06.entity.User;
import com.bdqn.ch06.service.UserService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

import javax.annotation.Resource;
import java.util.Set;

public class MyShiroRealm extends AuthorizingRealm { //安全数据源
    @Resource
    private UserService userService;

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("调用 MyShiroRealm.doGetAuthenticationInfo 获取身份信息！");
        //获得身份信息
        UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
        String usrName = token.getUsername();
        User user = userService.findByUserNameBiz(usrName);
        if (user == null) {
            throw new UnknownAccountException(); //账号错误
        }
        //if (user.getUsrFlag() == null || user.getUsrFlag().intValue() == 0) {
        //    throw new LockedAccountException(); //账号锁定
        // }
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(
                user,//身份(根据用户名查询数据库获得的用户)
                user.getUsrPassword(),//凭证(查询数据库获得的密码)
                getName()//Realm 对象的名称
        );
        //返回身份信息
        return info;
    }

    /**
     * 授权操作
     *
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("调用 MyShiroRealm.doGetAuthorizationInfo 获取权限信息！");
        //获得权限信息
        User user = (User) principalCollection.getPrimaryPrincipal();
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        //静态授权：授予主体(用户)相应的角色和权限
        /*info.addRole(user.getRole().getRoleName());
        info.addStringPermission("用户列表");//所有用户拥有"用户列表"权限
        if ("管理员".equals(user.getRole().getRoleName())) {//管理员拥有"增删改"权限
            info.addStringPermission("用户添加");
            info.addStringPermission("用户编辑");
            info.addStringPermission("用户删除");
            info.addStringPermission("L0601");
        }*/

        //动态授权
        Role role = user.getRole();
        if (role != null) {
            info.addRole(user.getRole().getRoleName());
            Set<Right> rights = role.getRights();
            if (rights != null && rights.size() > 0) {
                for (Right right : rights) {
                    info.addStringPermission(right.getRightCode());
                }
            }
        }
        return info;
    }
}
